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Finding the Fourth Proportional to 253,101.60, 349,266.36 and 139,917

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Solution

The fourth proportional to 253,101.60, 349,266.36 and 139,917 is: 193,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,101.60 : 349,266.36 = 139,917 : x
  2. Step 2: Convert to fraction form
    253,101.60/349,266.36 = 139,917/x
  3. Step 3: Cross multiply
    253,101.60x = 349,266.36 × 139,917
  4. Step 4: Simplify right side
    253,101.60x = 48,868,301,292.12
  5. Step 5: Solve for x
    x = 48,868,301,292.12/253,101.60
  6. Step 6: Final answer
    x = 193,077.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.